Toothbrush having multiple brushing surface configurations
US5570487A · kind A · utility
Inventor
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1066
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shaft is formed with a curved neck. The long axis of an oval brash head at the end of the neck is approximately perpendicular to a handle region of the shaft. Four semi-circular rows of bristles and two relatively straight rows of bristles project from the brush head at approximately right angles to the handle region. Two of the semi-circular rows are proximal to the handle and define a generally convex brushing surface. The other two semi-circular rows are distal to the handle and define a generally concave brushing surface. The two relatively straight rows are medial to the concave and convex brushing surfaces and define a generally planar brushing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.